Sound of Air Coming Out From Honda City's Engine Bay

. This is a discussion on Sound of Air Coming Out From Honda City's Engine Bay within The Technical Zone. Part of The Automotive Answers category; I noticed today when I turned off engine ,I heard sound like air is leaking / hissing sound for like ...

I noticed today when I turned off engine ,I heard sound like air is leaking / hissing sound for like 20 seconds from under bonnet .I never noticed this kind of sound before , A.C. is working fine .Is it normal for Honda City Ivtec ?

Actually when I went to mechanic for other work, he only noticed this sound , He immediately opened bonnet and inspected , He suspected AC gas leak but couldn't find leakage , he said I car Won't chill then its AC leak but Car is chilling normally .I never noticed this sound again .